Introduction to subtraction

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/addition-subtraction/basic_addition/e/subtraction_1?utm_source=YT&utm_medium=Desc&utm_campaign=Arithmetic

Watch the next lesson: https://www.khanacademy.org/math/arithmetic/addition-subtraction/two_dig_add_sub/v/adding-whole-numbers-and-applications-1?utm_source=YT&utm_medium=Desc&utm_campaign=Arithmetic

Missed the previous lesson?

https://www.khanacademy.org/math/arithmetic/addition-subtraction/basic_addition/v/basic-addition?utm_source=YT&utm_medium=Desc&utm_campaign=Arithmetic

Arithmetic on Khan Academy: So you're ready to have some arithmetic fun? You've come to the right spot! It's the first "official" math topic and chalked full of fun exercises and great videos which help you start your journey towards math mastery. We'll cover the big ones: addition, subtraction, multiplication, and division, of course. But we don't stop there. We'll get into negative numbers, absolute value, decimals, and fractions, too. Learning math should be fun, and we plan on having some with you. Ready to get started?

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